[Intel-gfx] [PATCH 2/6] drm/i915: Expose crtc CTM property on ilk/snb

[Ville Syrjala <ville.syrjala@linux.intel.com>]

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

The ilk/snb code is internally fully capable of handling the
CTM property, so expose it.

Note that we still choose not to expose DEGAMMA_LUT though.
The hardware is capable if degamma or gamma, but not both
similtanously due to lack of the split gamma mode. Exposing
both LUTs might encourage userspace to try enabling both
at the same time.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_color.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_color.c b/drivers/gpu/drm/i915/display/intel_color.c
index 07f1afe1d406..4fc16cac052d 100644
--- a/drivers/gpu/drm/i915/display/intel_color.c
+++ b/drivers/gpu/drm/i915/display/intel_color.c
@@ -3473,7 +3473,7 @@ void intel_color_crtc_init(struct intel_crtc *crtc)
 
 	gamma_lut_size = INTEL_INFO(i915)->display.color.gamma_lut_size;
 	degamma_lut_size = INTEL_INFO(i915)->display.color.degamma_lut_size;
-	has_ctm = degamma_lut_size != 0;
+	has_ctm = DISPLAY_VER(i915) >= 5 && !IS_VALLEYVIEW(i915);
 
 	/*
 	 * "DPALETTE_A: NOTE: The 8-bit (non-10-bit) mode is the
-- 
2.39.2